Click on that link I sent CS, you can store pictures there for free.
Once you get them on there, you get the URL code off the picture, and type it into the post reply box with the html. Which is, img src="
http://www.whatever" You have to use those < > at the front and back of that.
The above is not really a link, I just don't know how to do it without it coming out as one. It won't take you anywhere.
I don't know if this makes sense, but it's the best I can do.
Becky